<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<h1>{$b}</h1>
	<form action="{:U('Home/User/ff')}" method="post">
		<input type="text" name="id" value="">
		<input type="submit" name="" value="点我啊">
	</form>
</body>
</html>